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Tantaloy compression springs are usually used in gas chlorinator, We can make all tantaloy springs according to the spring data,such as

• Material ; 　 　 　
• Wire Diameter;   　
• Outside Diameter; 　 　
• Mean Diameter;  　
• Inside Diameter;　 　
• Free Length;   　
• Effective No. Coils or Active Turns; 　
• Total No. Coils or Full Turns; 　
• Working Length;　 　
• Working force;   　
• Modulus of Torsion(Alternative);　 　
• Ends square and ground;　 　

on request or according to the customer's drawings or blueprint.

Tantaloy compression spring is made of tantaloy "61" metal wire, NRC91 (92.5%/7.5% Ta/W)tantalloy wire, which can provide a lifetime warranteed service, furthermore, our tantalloy springs can meet the Chlorine Institute Standards,  this NRC91 tantalloy springs can fully meet the requirements of gas chlorinators for the water and wastewater(the chlorination for the disinfection of water & wastewater) treatment industry contributing to its unique features(Both RoHS compliant and the following ROHS):

• Remarkable dimensional stability even when thermally cycled to 2400 °F(1315 °C) in vacuum. 
• Outstanding corrosion resistance to chlorine, bromine and inorganic acids (except for HF - hydrofluoric acid); 
• High strength and " springiness" or excellent resilience which are retained at high temperatures under vacuum; 
• Superior toughness + stiffness, high-temperature mechanical properties and high density.

Sometimes, tantalloy springs were replaced by hastelloy C-276 spring(or hastalloy C276 spring) and Hastelloy C-22 alloy spring.
HASTELLOY® C-276 alloy is a nickel-molybdenum-chromium wrought alloy, having excellent resistance to localized corrosion and to both oxidizing and reducing media, HASTELLOY C-276 alloy has excellent resistance to a wide variety of chemical process environments, including strong oxidizers such as ferric and cupric chlorides, hot contaminated media (organic and inorganic), chlorine, formic and acetic acids, acetic anhydride, and seawater and brine solutions. It is used in flue gas desulfurization systems because of its excellent resistance to sulfur compounds and chloride ions encounted in most scrubbers. It is also one of the few materials that withstands the corrosive effects of wet chlorine gas, hypochlorite, and chlorine dioxide.

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